WhichtwoQoSclassificationandmarkingstatementsaretrue?()
A.InaFrameRelaynetwork,delaysensitivetrafficistaggedwiththediscardeligible(DE)bit.
B.InanMPLSnetwork,thethreemostsignificantbitsoftheDSCPortheIPprecedenceoftheIPpacketarecopiedintotheMPLSEXPfield.
C.InanMPLSnetwork,theMPLSEXPbitsareusedtoidentifyupto16CoSvalues.
D.Thedifferentiatedservicescodepoint(DSCP)fieldconsistsofthefirstthreebitsoftheIPprecedencefieldintheheaderofanIPpacket.
E.The802.1Qstandardusesathreebitfieldreferredtoastheuserprioritybits(PRI)tomarkpacketsasbelongingtoaspecificCoS.